[THIN] TermService errors on VMWare Citrix Servers

Hi all, once in a while I get the following errors on our VM Citrix PS servers.  When we do, no one can log in to those servers.  Usually, a reboot fixes them.

I was wondering if anyone else has seen these messages and how to fix them.

The servers are Windows 2003 Server SP2, PS 4.0 Hotfix Rollup 4

Event Type:     Error
Event Source:   TermService
Event Category: None
Event ID:       1014
Date:           3/25/2009
Time:           9:52:37 AM
User:           N/A
Computer:       VM1
Description:
Cannot load illegal module: C:\WINDOWS\system32\vdtw30.DLL.

Or

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Event Type:     Error
Event Source:   TermService
Event Category: None
Event ID:       1036
Date:           3/25/2009
Time:           9:52:37 AM
User:           N/A
Computer:       VM1
Description:
Terminal Server session creation failed. The relevant status code was 0xC00A0016.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

Followed by:

Event Type:     Error
Event Source:   TermService
Event Category: None
Event ID:       1014
Date:           3/25/2009
Time:           9:15:45 AM
User:           N/A
Computer:       VM1
Description:
Cannot load illegal module: C:\WINDOWS\system32\Drivers\wdica.SYS.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.

_______________________________
Hector Minero